Oligopeptide-68 is a whitening peptide containing twelve amino acids. It inhibits the MITF molecular channel by simulating the binding of TGF-β to cell receptors, reduces pigmentation, and then reduces the production of melanin, making the skin brighter. In addition, it can inhibit the activity of tyrosine protease, prevent the formation of melanin, and reduce the excessive production of melanin by inhibiting MSH.